let c = 100;
let f = 100;
let F;
let C;
F = (9 * c) / 5 + 32;
C = 5 * (f - 32) / 9;
console.log(c + "摄氏度 等于" + F + "华氏摄氏度");
console.log(f + "华氏摄氏度 等于" + C + "摄氏度");